Earlier on the Court Philippe-Chatrier, men's singles third seed, Dominic Thiem claimed another straight-set victory over 28th seed Casper Ruud, beating the Norwegian 6-4, 6-3, 6-1 to set up a last-16 clash against the winner between 2015 champion Stan Wawrinka and Hugo Gaston.
After the restart, Dortmund started where it left off and doubled the lead two minutes into the second half as Reyna's pinpoint corner kick found Emre Can, who nodded home the ball over Muller.
Against Huesca and Villarreal, Atletico showed their old problems as they struggled to create chances against well-organized rivals, while Suarez looked sluggish.
FC Barcelona have had a promising start to the campaign under new coach Ronald Koeman, scoring seven goals in their opening two matches, with the midfield pairing of Sergio Busquets and Frenkie de Jong giving a solid base for the attacking quarter of Ansu Fati, Leo Messi, Philippe Coutinho and Antoine Griezmann.
The 2018 champion lost to Anisimova in the quarterfinals in Paris last year, but this time the Romanian needed only 54 minutes to complete a convincing victory.
Mohamed Salah scored twice for Liverpool, but that was scant consolation as Liverpool became the first reigning champion to concede seven goals since 1953.
He will also miss the first four Champions League group matches in which Real Madrid line up against Inter Milan, Shakhtar Donetsk and Borussia Monchengladbach following Thursday's draw.
The Iranian giant advanced to the ACL final with a 5-3 win on penalties against Al Nassr after the West Zone semifinal ended 1-1 in 120 minutes at the Jassim bin Hamad Stadium on Saturday.
The financial impact of the pandemic on football has been apparent, the former Leipzig coach said.
The two-time Grand Slam winner committed just seven unforced errors throughout the one-sided encounter and broke her opponents six times.
The Grand Prix Final had been scheduled for December 10-13, 2020 with the World Cup Short Track a week later. Both events were postponed "in consultation with all stakeholders and considering the pandemic developments," the ISU announced in a statement on Friday, with re-scheduling possibilities under discussion.